CVE-2026-15386

3th percentile - higher than 3% of all known CVEs

The Meow Gallery WordPress plugin before 5.5.2 does not escape an attachment's alt text before outputting it into an attribute of the link it builds for linked galleries, allowing users with the Author role or above to store a JavaScript payload that executes in the browser of any visitor (including administrators) who views a post containing such a gallery.

The risk includes execution of malicious scripts in visitors' browsers, potentially leading to session theft, phishing attacks, or malware distribution.

Update the Meow Gallery plugin to version 5.5.2 or later. Also, properly escape alt text before using it in HTML attributes.